| 摘要 |
A compound semiconductor device includes a nitride semiconductor stacked structure including a carrier transit layer and a carrier supply layer; a source electrode and a drain electrode provided over the nitride semiconductor stacked structure; a gate electrode provided between the source electrode and the drain electrode, over the nitride semiconductor stacked structure; a field plate provided at least partially between the gate electrode and the drain electrode; and a plurality of insulation films and formed over the nitride semiconductor stacked structure, wherein a number of interfaces of the plurality of insulation films is smaller between the field plate and the drain electrode than in the vicinity of the gate electrode.
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